IBM 5151 (MDA display) - common faults / gotchas?

I also lost a 5151 monitor to a program crash, it was "Gone in Sixty Seconds" or less. I replaced it with a third party monitor that had the advertised feature of not burning up due to lost sync. Michael Holley -----Original Message----- From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Chuck Guzis Sent: Sunday, November 09, 2014 8:44 AM To: General at classiccmp.org; Discussion at classiccmp.org:On-Topic and Off-Topic Posts Subject: Re: IBM 5151 (MDA display) - common faults / gotchas? I'll add this to the 5151 issue. Because the 5151 responds to *every* horizontal sync pulse, it's quite possible to toast the flyback transformer with the wrong frequency. I know--I've done it. Contrast with a simple astable multivibrator which would simply lose synch . --Chuck